well divdude, while i am not much into "long lived resonance", as per my understanding on the subject, a simple antenna made up of copper can be made non-radiative - meaning, energy will be "bound" to it rather than it getting scattered as with the case of a radiative object. it would be interesting to know the physics of such objects. obviously, energy loss can be greatly optimized, if it works the way it has been explained. Here's how it works: 1) Power from mains to antenna, which is made of copper 2) Antenna resonates at a frequency of 6.4Mhz, emitting electromagnetic waves 3) 'Tails' of energy from antenna 'tunnel' up to 5m (16.4ft) 4) Electricity picked up by laptop's antenna, which must also be resonating at 6.4Mhz. Energy used to re-charge device 5) Energy not transferred to laptop re-absorbed by source antenna. People/other objects not affected as not resonating at 6.4Mhz As for satellite, infrared (IR) and microwave transmissions are concerned, they require line of sight (an unobstructed view from transmitter to receiver) between nodes, so the prospect of laser and satellite to provide a seamless power is greatly hindered. you mentioned that you worked with radar. i am sure it does not require LOS, so it could be a better option than laser/lidar. care to share your experiences? i mean what could be the potential sources of loss apart from the diffraction lobes. LooTe